At the end of the pre-opening period, the system begins the matching process, where the opening price for each stock is calculated from the price which generates the largest volume. After opening transactions are executed, the exchange is open for regular trading.

Off-hours trading is the extra trading period after the closing of the regular trading session. Off-hours trading starts from the random closing time until 17:00 hours. This facility enables investors, especially institutional investors and foreign investors, to adjust their positions. It also serves as a tool for traders to adjust error transactions or cover the transactions executed in the regular session. Only Put-Through transactions can be recorded on the main board, big lot board and foreign board.